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Finding the Fourth Proportional to 202,488.50, 279,434.13 and 113,064.50

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Solution

The fourth proportional to 202,488.50, 279,434.13 and 113,064.50 is: 156,029.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,488.50 : 279,434.13 = 113,064.50 : x
  2. Step 2: Convert to fraction form
    202,488.50/279,434.13 = 113,064.50/x
  3. Step 3: Cross multiply
    202,488.50x = 279,434.13 × 113,064.50
  4. Step 4: Simplify right side
    202,488.50x = 31,594,080,191.39
  5. Step 5: Solve for x
    x = 31,594,080,191.39/202,488.50
  6. Step 6: Final answer
    x = 156,029.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.